Dell XPS 15 9550 - no boot, shorts on circuit

[mhmart]

I have an xps 15 9550 here, which won't boot, neither the screen diagnostics will start (pwr button + D).

I opened the device finding that the part around the processor got warm (touchable though). Fans will not spin even once. Light on power button is always on when connected to AC, but not when only connected to battery DC.

I included a photo of the motherboard which I did some probing on, finding that the encircled caps/diodes are shorted (red). I also encircled an IC on the board (green) which I think is the Alpha Omega Z5019QI, of which one side is not shorted (blue) so it might have to do something with this IC?

I cannot truly find what this IC is supposed to do on the board but if one can explain me

Any suggestions on what to try next or might I best just remove the IC and see if the short still occurs?

I found the schematics on this forum page:
https://www.badcaps.net/forum/showthread.php?t=67578 which show the Z5019QI device on page 61 of 75 (Dell XPS 15 9550 AAM00 LA-C361P 2014-05-22.pdf)

I tried to attach as much of info as I could at this moment. I am trying to learn

[piernov]

Re: Dell XPS 15 9550 - no boot, shorts on circuit

https://www.badcaps.net/forum/showpo...02&postcount=2

2.2. Don't suspect that something is shorted with no reason
Shorted components are not the only failure mode of a laptop. Additionally, some places will measure low resistance to ground under normal operation. In general, high power low voltage (<2V) power rails will measure less than a few hundred ohms to ground. CPU VCore will measure a few ohms only. GPU VCore with newer NVidia GPU can even measure less than 1 ohm. It's normal. If you suspect a short to ground, always report your exact resistance to ground measurements.